Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1994-08-05
1996-03-26
Epps, Georgia Y.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369116, G11B 390
Patent
active
055027024
ABSTRACT:
An optical disc recording device includes a control information memory storing a plurality of control information concerning a laser modulation system used during a recording mode for plural types of discs and a recording control circuit for inputting information of the disc type of a disc-on which recording is to be made, reading out information corresponding to the input information from the memory and carrying out contents of a control designated by the control information to achieve recording. In one aspect of the invention, for forming pits of recording pit lengths of 3T to 11T on a CD-WO optical disc using a phthalocyanine dyestuff as a recording material, the recording control circuit includes a projection time control circuit for controlling projection time of recording laser beam with respect to a pit length nT of a pit to be formed to
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Dinh Tan
Epps Georgia Y.
Yamaha Corporation
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